Me too 
Ok, here is the context:
The snippet is part of my code. In my view package there is an AppState for listening the user input that has to do with the camera. And I have a small camera class that translates the user input to actual camera movement. Mostly copied from JME’s FlyCam itself, shamelessly. This works for me, for now, and is not probably 100% right or nice. But may give you a hint.